<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
    <link rel="stylesheet" href="/style.css">
</head>
<body>
<h5>你的账户余额是：<span id="amount">&&&amount&&&</span></h5>
<form action="/pay" method="post">
    <input type="text" name="number" value="1">
    <input type="submit" value="付款">
</form>
</body>
</html>